Stop-motion.



e. M; ARRAGG.

STOP MOTION.

APPLICATiON FILED JAN. 28. i915,

Patented Jan. 18

3 SHEETS-SHEET I.

IN VEN TOR.

W 1 TNESSES:

A TOR NE Y.

G. M. ARRAGG.

STOP WOTION.

APPLICATION FILED JAN.28,1915.

Patented jan.18,1916.

'3 SHEETS-SHEET 2.

WITNESSES:

e. M. A RRAGG. STOP MOTION.

APPLICATION HLED JAN.28,-1915.

1,168,457. Patented Jan.18, 1916.

3 SHEETS-SHEET 3.

WITNESSES.-

OQ/WM TRNEY.

GEORGE M. .AR,RAGG, OF LAWREN CE, MASSACHUSETTS.

STOP-MOTION.

Specification of Letters Patent.

Patented Jan. 18, 1916.

Application filed January 28, 1915. Serial Non L877.

To all whom. it may concern:

Be it known that I, GEORGE M. ARRAGG, a subject of the Empire of Turkey reside ing'at Lawrence, in the county of Essex and machines wherein thereoar'e front and back drawing rolls through which the roving passes and from which it is delivered to twisting or spinning mechanism and wound upon a bobbin; Its purposes are to disengage the roving from thefirstpr back drawing rolls which act as feed rolls and tobreak it at that point of delivery, so that if a break occurs between the backand front rolls or between the front rolls and bobbin, the rovpicking up the waste, cleaning and picking ing will cease to be delivered. Thereby, when a break occurs there will be very little waste and the roving will not be delivered in such a manner as to becomeentangled with the machinery or soiled by contact with the machine frame or floor.

' Withmy device an operator can tend more machines. He is also in less danger from accidents which frequently occur in clearing the roving from-the roll in case of a brokenend which winds up thereon. I clearing such roving there is great danger that the op'erators fingers will be pulled in. There is less likelihood of injury to the ma- .chinerv also, as the operator. frequently pounds the rolls in the effort to clear the roving. There is a great saving in waste- Which means also a saving in the cost of it over.

My device also prevents laps and what is known as double spinning,'where an end breaks and in some wav ets m xed up with an adjoining end. thereby spoiling both or,

if not discovered in time, spoiling cloth by making defective work.

Mv device is particularly applicable to cap spinning machines and in the drawings herewith-I showv it attached to such a cap spinning machine for worsted yarn.

In the drawings, Figure 1 is' a diagrammatlc sideelevation of a cap spinning ma-' chine with my device attached. Fig. 2 is a drawing rolls.

and Fig. 7 a detail plan view of the-stretcher plan View of part thereof showing two rocking members on the left in running position and one on the'right after an end has broken and it has been pushed over to stop themachine. Fig. the vibrator. Fig. i is a detail side elevation enlarged of the back rolls and connections. Fig. 5 is a rear elevation of the back Fig. 6 is a detail elevation plate. v Fig. 8 is a detail of the top carrier rolls. Fig. 9 is a modification of the setting mechanism. 1

A represents the frame of a spinning machine.

B represents the cap, C the bobbin, E the" roving spool, F and G the back drawing 3 i a rear elevation of partaofi rolls, H the top carrier rolls and M the bot tom carrier rolls, K and L the front drawing rolls all substantially of usual construction. and N represents the roving.

The bottom back drawing roll G is positively driven by any usual meansa's is also the bottom front -'drawing roll L. The top front drawing roll K may .be of any usual construction. F or each strand or plurality of strands of roving which'a're to be twisted into a single end; I use a separate top back drawing roll F. Each is carriedby a hanger 20 slidable through a hanger frame 21. Through each hanger 20 passes a han er pin 22 into frame 21. the hanger being slidable thereon. Around pin 22 between hanger 20.

and an adj Listing nut 23 is a back roll spring 24 which tends tokeep the top back drawing roll F in engagement with the bottom back drawing roll G, whereby the varn or roving- N will bedrawn in and delivered in the usual manner.

Fixed to any suitable rail or bar'30 fixed to the frame of the machine are one or more L shaped plates 31 with a horizontal shelf 32. For each back top roll F, I provide a lifting plate 33 pivoted to 31 with its free end at. a point between rolls F and G not touching either. The roving N asses between the end 3.4'of this lifting plate and top roll F.

A compression spring'35 between lifting plate 33 and shelf 32 wouldforce plate 33 upward into engagement with roll F as shown by the dotted lines in Fig. 4 were it not for. restrainiing'means which I-will-now describe. Onlth'e frame of the machine substantially "below each lifting plate 33 is fixed a stretcher plate 40 with a forward and back slot l1 and a shoulder 42 which projects thereinto. A flexible member 44 which may be a chain or Wire rope is tastened at one end to the bottom of lifting plate 23 andextends downward therefrom, preferably through lifting plate spring 85, and through shelf32 Cit-\VIlWitld through slot 41 thence'at' a substantially sharp angle Locking means-38 as a pawl and ratchet are preferably used toretain the parts in position. Transversely of themachine approximateto and preferably' underthe stretcher plates 40., v place a vibrator rod 50 which carries fingers 51 which extend upward and preferably partly over each stretcher plate in proximity to the member 4A and under the end. of a rocking member. This "vibrator moves back and forth continually through the medium of a strap 52 and eccentric 53 carried byshaft 5 L driven by pulley 55' and belt 58 from a main driving shaft 57.

Pivoted vmedially of its length to the frame at 61 is a rocking member the back dtl rocking member 60 end of whichis movable up and down into the path of the vibrator fingers 51 in close proximity to the-upwardly extendingpart of flexible member 44%. The front end 62 of is preferably, T shaped as shown in'Fig. 2 and preferably has a hole 63 through which the roving passes. rocking member is so'placed and balanced thatthe action of the roving passing down from the front rolls to the bobbin will depress the front end and raise the back end above the path of fingers 51 as shown clearly in Fig. 1 and Fig. 3.

If the roving breaks between the back rolls and bobbin, the tension on the front of the rocking member ceases and as its back end is'longer and heavier, that end drops into the dotted position shown in Fig. 3. In this position, it will be struck at the next movement of the adjoining finger 51 and will bepushed over against the flexible member 44: pushing it sidewise oil from the shoulder 42 if it is caughtthereover. The pivot at 61 is preferably loose so as toallow therccking member 60 not only to move vertically but to some extent horizontally.

. The shoulder 42 is at the front ofthe slot 41 and on the side adjoining the vibrator finger. As the back end of flexible member 44 is fixed, it is manifest that if it is pulled forward and caught over shoulder liitwill pull downward lifting This plate '33 against insane? will be and L will break it between the front and back rolls.

Starting with the flexible member caught over the stretcher plate, it will be seen that if an end breaks allowing rocking member 60 to drop into the path of the vibrator, the

action of the vibrator will push the end of the rocking member sidewise pushing oil the flexible member from the shoulder thus releasing lifting plate 33 whereby the top roll will be lifted and the roving stopped.

No more roving can be delivered until the lifting plate is reset and the top'back roll drops-back -into place.

I prefer to use in slot. 411 a has top and bottom flanges projecting over the sides of the slot as shown in F igs. 6 and 7 and a double trumpet shaped central passage through which passes the flexiblemeni ber l-Lt. This spool. reduces the wear on the flexible member and makes'it easier to operate. r y

I might reset the lifting plate by reaching in with the fingers or hand and pulling the flexible member forward and to the side until it caught over shoulderel'rl but I prefer to use a setting member. One form of setting member is shown at 70in Figs. 1 and 2. It comprises rod 70, for each end, which runs forward'and back adjoining the stretcher plate and carries at its baclr a carriage 71 which has an oblique forward edge 72 which crosses slot 4d, When this setting member is pulled forward by its rod 70, the front end of which may be curved 73 to form c] handle at the front of the machine,

if the flexible member is in the slot ll,

facilitate-the piecing of the ends after a spool 46 which break, I prefer to attach a slanting; plate of metal 7 1: to the back of carriage 71 in such position that as the carriage is pulled for-.

ward, this piece of metal will act as a raising plate and lift the back end of rocking member 66. It keeps itraised until the carriage 71 is pushed back- I might use a returning spring in connection with my settingmeans but prefer not to do so as in using. the raising plate for the back end of the rocking memberin connection therewith, it isbetter to leave .the ends are pieced.

y, The bottom carrier rolls are of the usual type, but, as shown in Fig. 8, instead of the usual form of top carrier rolls H, I pre-.

fer to have independent rolls 80 mounted loosely on a rod or shaft 81 so that when 1 one end breaks, there will be no interference with the other ends. As instead of mountmg my front and back rolls in pairs, I

- mount each-one singly, itis desirable that the carrier mounted.

In Fig. 9, I show another form of setting mechanism which comprises a bell crank rolls. should also be singly having a horizontal member 90 and vertical [member 91 pivoted at their junction to the frame of the machine the front endof 90 projecting at the front of the machine where it can be easily reached by the operator.

{The vertical member is pivoted to a connectng rod 92 which is pivoted at its other end tocarriage 71.

My vibrator 'as shown includes the rod 50, fingers 51, strap 52, eccentric 53, shaft 54c and the drivingmeans but it is-clear that any other of the well known forms of Vihrator mechanism maybe used in place thereof.

The mechanism for adjusting the length of the flexible member is particularly useful when as shown in Fig. 1 a longer ratch'is v desired and the back rolls are moved backward andupward to the dotted position shown. In such case, it is necessary to increase thev length of the flexible member. This is done by unlocking the-adjusting handwheel 37 and turning it with its spools 36 unwinding the flexible member to the extent desired.

To facilitate replacing-the flexible member over the shoulder 42, its spool 36'is not directly behind it but somewhat more toward the shoulder side as shown in Fig. 3.

To keep member 4A -from'slipping off, the spools preferably have flanges or heads as shown.

My device is especially adapted for use on .cap, ring and flier spinning machines.

The usual driving mechanism is used but is omitted for the sake of clearness.

'I'claim:

1.In a worsted 'splnmng machine having a frame and a bobbin, a positively driven bottom back drawing roll, a spring-pressed frictionally driven "top back drawing roll movable thereto and therefrom, a pivoted lifting plate adapted to lift the/spring pressed top back drawing roll, a spring which so engages said plate as to cause it to lift the spring-pressed drawing roll, a v1- I brator, a stretcher plate having a slot with a shoulder, a flexible member which passes through the stretcher plate slot and 1s fastenedat-one end to the frame of the: ma-g of which one end is between the flexible member and the vibrator and the other end of which engages the roving between the bobbin and the drawing rolls, and setting means operative from the front of the machine to engage the flexible member with the shoulder of the stretcher plate. 2. In a worsted spinning machine having a frame and a bobbin, a positively driven bottom back drawing roll, a spring-pressed frictionally driven top back drawing roll movable thereto and therefrom, 3.1P1V0i38d lifting plate adapted to lift the springpressed top 'backdrawing roll, a spring which so engages said plate as to cause it to lift the spring-pressed drawing roll, a vibrator, a stretcher plate having a slot with a shoulder, a flexible member which passes through the stretcher plate slot and is fastened at one end to the frame of the machine and at the other end to the lifting plate, a medially pivoted rocking member of which engages the roving between the bobbin and the drawing rolls, and setting means which comprise a handle operative from the front of the machine, a slidable carriage operative thereby having an oblique forward edge in operative relation with the flexible member, and a slanting raising plate attached to the carriage as described.

.3. In a spinning ,machine, the combina-'- "tion of a bottom back drawing roll, a frictionally driven top back drawing roll spring-pressed thereon, a lifting plate, and a lifting plate spring, with a vibrator, a stretcher plate havinga slot and a shoulder, a flexible member which passes through the slot in the stretcher plate and is fixed at one end and is attached at the other end to the lifting plate, and a medially pivoted rocking member having one end in engagement with the roving and the other end between the 1 vibrator and the .flexible member.

4. In a spinning machine, the combination of a bottom back drawing roll, a frictionally driven top back drawing roll spring-pressed thereon, a lifting plate, and a lifting plate spring, with a vibrator, a stretcherplate having a slot and a shoulder, a flexible member which passes thro gh the slot in the stretcher plate and is fixed at one end and is attached at-the other end'to the lifting plate. and a medially pivoted rocking member having one end in engage ible member withthe shoulder of the stretcher plate. I

5. In a spinning machine, the combination ofja. bottom back drawing roll, a frictionally 'driven top back ,drawing;

spring-pressed thereon, a lifting plate, and a lifting plate spring, with a vibrator, a stretcher plate having a slot anda shoulder, a flexible member which passes through the slct in thestreteher plate and is attached at one end to the lifting plate and at the other end to an adjusting member, said adjusting member, and a medially pivoted rocking member having one end in engagement with the roving and the other end between the vvibrator and the flexible'meniber.

6. In a spinning machine, the COIDlDlDS. tion of a bottom baez drawing roll, a frictionally driven top back drawing roll spring pressed thereon, a lifting plate, and a lifting plate spring, with a vibrator, a

meme? a flanged spool slidable in the stretcher plate slot, a flexible member Whichpasses through said spool and is fXed at ene'end and is attached at the other end to the lift-' ing plate, and a medially pivoted rocking member having one end in engagement with the rovingand the other end between the vibrator and the flexible member.

In testimony whereof 1 hereto afiiX Inf, signature in presence of two Witnesses.

GEORGE M. ARRAGG.

lVitnesses AND EW A. I'IAGEN, ALBERT S. ARRAGG. 

